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首页> 外文期刊>Materials and structures >Interaction of 2-, 3-and 4-nitrobenzoic acid with the structure of calcium-silicate-hydrate
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Interaction of 2-, 3-and 4-nitrobenzoic acid with the structure of calcium-silicate-hydrate

机译：2-，3-和4-硝基苯甲酸与硅酸钙水合物的相互作用

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摘要

Interaction of nitrobenzoic acid (NBA) with the structure of calcium-silicate-hydrate (C-S-H) was investigated. Phase pure C-S-H and C-S-H with 2-, 3- or 4NBA (0.01 and 0.02 mol/mol of Ca) were synthesized, and characterized by the X-ray diffraction, thermal analysis, Fourier transform infrared spectroscopy and scanning electron microscope techniques. Nitrogen adsorption measurements were also performed to estimate the surface area of the samples. It is suggested that all NBA isomers with the concentration of 0.01 mol/mol of Ca were able to fill the defects on the surface of the C-S-H layers, block access to the space between the stacked C-S-H layers, and possibly partially intercalate the layered structure. The C-S-H-based samples prepared with different types of NBA compounds, however, had different characteristics. The interaction of organic and inorganic phases was limited in the samples incorporating higher concentration of NBA. Traces of unreacted NBA were detected in a few samples with 0.02 mol of NBA/mol of Ca.
机译：研究了硝基苯甲酸（NBA）与水合硅酸钙（C-S-H）结构的相互作用。合成了具有2-，3-或4NBA（0.01和0.02 mol / mol Ca）的相纯C-S-H和C-S-H，并通过X射线衍射，热分析，傅立叶变换红外光谱和扫描电子显微镜技术进行了表征。还进行了氮吸附测量以估计样品的表面积。建议所有浓度为0.01 mol / mol Ca的NBA异构体均能够填补C-S-H层表面的缺陷，阻止进入堆叠的C-S-H层之间的空间，并可能部分插入层状结构。然而，使用不同类型的NBA化合物制备的基于C-S-H的样品具有不同的特性。在掺入较高浓度NBA的样品中，有机相和无机相的相互作用受到限制。在0.02 mol NBA / mol Ca的一些样品中检测到痕量未反应的NBA。

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